Marc23 thanks for your message, but at geneall.net is no direct line or connection to the “zu Fürstenbergs” ...Look at these links:
Countess Emilie Chorinsky von Ledske married 28.05.1833 Georg von Thurn und Valsássina-Como-Vercelli and your information says, that her granddaughter is Countess Marianne von Thurn und Valsassina-Como-Vercelli but she was born 10.09.1835 only 2 years after Emilie's wedding ...
At these geneall.net links you can see these are two different lines, Count Johann Duclas von Thurn und Valsassina-Como-Vercelli is not a son of Countess Emilie Chorinsky von Ledske
GeneAll.net - Emilie, Grfin Chorinsky
Landgraf Friedrich von Fürstenberg
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Princess Constanze zu Fürstenberg
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Countess Emilie Chorinsky von Ledske oo28.05.1833 Georg von Thurn und Valsássina-Como-Vercelli
GeneAll.net - Duglas, Graf von Thurn und Valsassina-Como-Vercelli
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Count Johann Duclas von Thurn und Valsassina-Como-Vercelli
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Countess Marianne von Thurn und Valsassina-Como-Vercelli *10.09.1835
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Count Johann Zeno von Goess-Saurau
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Count Carl Anton von Goess-Saurau
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Countess Maria von Goess-Saurau
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Xenia Maculan
No problem,but your dates might be wrong as Countess Emilie Chorinsky von Ledske was born on 14th of January 1811 in Brünn and died on 14 Aug 1888 in Bleiburg...
On 28 May 1833 she married in Wien Count Georg von Thurn und Valsassina-Como-Vercelli,Freiherr zum Kreuz who was born on 3 Jan 1788 in Prague and died on 9 Feb 1866 in Wien...
Their son was Count Johann Duclas von Thurn und Valsassina-Como-Vercelli,Freiherr zum Kreuz who was born on 22 Sep 1835 in Mainz and died on 26 Jul 1904 in Streiteben while his daughter Countess Marianne was born on 10 Seprt 1869 also in Streiteben,married on 24 July 1889 in Bleiburg to Count Leopold von Goess and died on 21 April 1940 in Graz...
Hope things are now more clear